package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.GoodsSalesDTO;
import com.sky.entity.Orders;
import com.sky.mapper.OrdersMapper;
import com.sky.mapper.UserMapper;
import com.sky.service.ReportService;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class ReportServiceImpl implements ReportService {
    @Autowired
    private OrdersMapper ordersMapper;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WorkspaceService workspaceService;
    /**
     * 营业额数据统计
     * @param begin
     * @param end
     * @return
     */
    @Override
    public TurnoverReportVO getTurnover(LocalDate begin, LocalDate end) {
        //x轴数据
        ArrayList<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        ArrayList<Double> amountList = new ArrayList<>();
        for (LocalDate date : dateList) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Integer status=Orders.COMPLETED;
            Double amount = ordersMapper.getAllAmount(status,beginTime,endTime);
            amountList.add(amount==null?0:amount);
        }
        TurnoverReportVO turnoverReportVO = new TurnoverReportVO();
        turnoverReportVO.setDateList(StringUtils.join(dateList,","));
        turnoverReportVO.setTurnoverList(StringUtils.join(amountList,","));
        return turnoverReportVO;
//        //将日期封装到时间集合中
//        List<LocalDate> dateList = new ArrayList<>();
//        dateList.add(begin);
//        while (!begin.equals(end)){
//            begin=begin.plusDays(1);//日期计算，获得指定日期后1天的日期
//            dateList.add(begin);
//        }
//        List<Double> turnoverList = new ArrayList<>();
//        for (LocalDate date : dateList) {
//            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
//            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
//            Map map = new HashMap();
//            map.put("status", Orders.COMPLETED);
//            map.put("beginTime", beginTime);
//            map.put("endTime", endTime);
//            Double turnover = ordersMapper.sumByMap(map);
//            turnover = turnover == null ? 0.0 : turnover;
//            turnoverList.add(turnover);
//        }
//        TurnoverReportVO turnoverReportVO = TurnoverReportVO.builder().dateList(StringUtils.join(dateList, ",")).turnoverList(StringUtils.join(turnoverList, ",")).build();
//        return turnoverReportVO;
    }

    /**
     * 用户数据统计
     * @param begin
     * @param end
     * @return
     */
    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateList = new ArrayList<>();
        dateList.add(begin);
        while (!begin.equals(end)){
             begin = begin.plusDays(1);
             dateList.add(begin);
        }
        List<Integer> newUserList = new ArrayList<>(); //新增用户数
        List<Integer> totalUserList = new ArrayList<>(); //总用户数
        for (LocalDate date : dateList) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            //新增用户数量 select count(id) from user where create_time > ? and create_time < ?
            Integer newUser = getUserCount(beginTime,endTime);
            //总用户数量 select count(id) from user where  create_time < ?
            Integer totalUser = getUserCount(null, endTime);
            newUserList.add(newUser);
            totalUserList.add(totalUser);
        }
        //封装用户报告给前端
        UserReportVO userReportVO = UserReportVO.builder().dateList(StringUtils.join(dateList,",")).newUserList(StringUtils.join(newUserList,",")).totalUserList(StringUtils.join(totalUserList,",")).build();
        return userReportVO;
    }

    /**
     * 根据时间区间统计订单数量
     * @param begin
     * @param end
     * @return
     */
    @Override
    public OrderReportVO getOrderStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate> dateTime = new ArrayList<>();
        dateTime.add(begin);
        while (!begin.equals(end)){
            begin=begin.plusDays(1);
            dateTime.add(begin);
        }
        //订单总数
        List<Integer> totalOrderList = new ArrayList<>();
        //每天有效订单
        List<Integer> validOrderList = new ArrayList<>();
        for (LocalDate date : dateTime) {
            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
            Map<String, Object> map = new HashMap<>();
            map.put("beginTime",beginTime);
            map.put("endTime",endTime);
            Integer total = ordersMapper.totalOrder(map);
            totalOrderList.add(total);
            map.put("status",Orders.COMPLETED);
            Integer valid = ordersMapper.totalOrder(map);
            validOrderList.add(valid);
        }
        //订单总数
        Integer totalOrderCount = 0;
        for (Integer total : totalOrderList) {
            totalOrderCount+=total;
        }
        //有效订单数
        int validOrderCount = validOrderList.stream().mapToInt(c -> (int) c).sum();
        //订单完成率
        Double orderCompletionRate=0.0;
        if (totalOrderCount!=0){
            orderCompletionRate=Double.valueOf(validOrderCount)/totalOrderCount;
        }
        OrderReportVO vo = OrderReportVO.builder().dateList(StringUtils.join(dateTime, ",")).orderCountList(StringUtils.join(totalOrderList, ",")).validOrderCountList(StringUtils.join(validOrderList, ",")).totalOrderCount(totalOrderCount).validOrderCount(validOrderCount).orderCompletionRate(orderCompletionRate).build();
        return vo;
//        for (LocalDate date : dateTime) {
//            LocalDateTime beginTime = LocalDateTime.of(date, LocalTime.MIN);
//            LocalDateTime endTime = LocalDateTime.of(date, LocalTime.MAX);
//            //查询每天的总订单数 select count(id) from orders where order_time > ? and order_time < ?
//            Integer orderCount = getOrderCount(beginTime,endTime,null);
//            //查询每天的有效订单数 select count(id) from orders where order_time > ? and order_time < ? and status = ?
//            Integer validOrderCount = getOrderCount(beginTime, endTime, Orders.COMPLETED);
//            totalOrderList.add(orderCount);
//            validOrderList.add(validOrderCount);
//        }
//        //时间区间内的总订单数
//        Integer totalOrderCount = totalOrderList.stream().reduce(Integer::sum).get();
//        //时间区间内的总有效订单数
//        Integer validOrderCount = validOrderList.stream().reduce(Integer::sum).get();
//        //订单完成率
//        Double orderCompletionRate = 0.0;
//        if(totalOrderCount != 0){
//            orderCompletionRate = validOrderCount.doubleValue() / totalOrderCount;
//        }
//        return OrderReportVO.builder()
//                .dateList(StringUtils.join(dateTime, ","))
//                .orderCountList(StringUtils.join(totalOrderList, ","))
//                .validOrderCountList(StringUtils.join(validOrderList, ","))
//                .totalOrderCount(totalOrderCount)
//                .validOrderCount(validOrderCount)
//                .orderCompletionRate(orderCompletionRate)
//                .build();
    }
    /**
     * 查询指定时间区间内的销量排名top10
     * @param begin
     * @param end
     * @return
     * */
    @Override
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
//        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
//        LocalDateTime endTime = LocalDateTime.of(begin, LocalTime.MAX);
//        List<GoodsSalesDTO> salesTop10List = ordersMapper.getSalesTop10(beginTime, endTime);
//        List<String> nameList = salesTop10List.stream().map(goodsSalesDTO -> goodsSalesDTO.getName()).collect(Collectors.toList());
//        List<Integer> numberList = salesTop10List.stream().map(goodsSalesDTO -> goodsSalesDTO.getNumber()).collect(Collectors.toList());
//        SalesTop10ReportVO salesTop10ReportVO = SalesTop10ReportVO.builder().nameList(StringUtils.join(nameList,",")).numberList(StringUtils.join(numberList,",")).build();
//        return salesTop10ReportVO;
            LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
            LocalDateTime endTime = LocalDateTime.of(end, LocalTime.MAX);
        List<GoodsSalesDTO> goodsSalesDTOList = ordersMapper.getSalesTop10(beginTime, endTime);
        String nameList = StringUtils.join(goodsSalesDTOList.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList()),",");
        String numberList = StringUtils.join(goodsSalesDTOList.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList()),",");

        return SalesTop10ReportVO.builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }
    /**
     * 导出运营数据表
     * @param response
     */
    @Override
    public void exportBussinessData(HttpServletResponse response) {
        LocalDate begin = LocalDate.now().minusDays(30);
        LocalDate end = LocalDate.now().minusDays(1);
        //查询概览运营数据，提供给Excel模板文件
        BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(begin,LocalTime.MIN), LocalDateTime.of(end, LocalTime.MAX));
        InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");
        try {
            //基于提供好的模板文件创建一个新的Excel表格对象
            XSSFWorkbook excel = new XSSFWorkbook(inputStream);
            //获得Excel文件中的一个Sheet页
            XSSFSheet sheet = excel.getSheet("Sheet1");

            sheet.getRow(1).getCell(1).setCellValue(begin + "至" + end);
            //获得第4行
            XSSFRow row = sheet.getRow(3);
            //获取单元格
            row.getCell(2).setCellValue(businessData.getTurnover());
            row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessData.getNewUsers());
            row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessData.getValidOrderCount());
            row.getCell(4).setCellValue(businessData.getUnitPrice());
            for (int i = 0; i < 30; i++) {
                LocalDate date = begin.plusDays(i);
                //准备明细数据
                businessData = workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX));
                row = sheet.getRow(7 + i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessData.getTurnover());
                row.getCell(3).setCellValue(businessData.getValidOrderCount());
                row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessData.getUnitPrice());
                row.getCell(6).setCellValue(businessData.getNewUsers());
            }
            //通过输出流将文件下载到客户端浏览器中
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);
            //关闭资源
            out.flush();
            out.close();
            excel.close();

        }catch (IOException e){
            e.printStackTrace();
        }
    }

    /**
     * 根据时间区间统计用户数量
     * @param beginTime
     * @param endTime
     * @return
     */
    private Integer getUserCount(LocalDateTime beginTime, LocalDateTime endTime) {
        Map map = new HashMap();
        map.put("begin",beginTime);
        map.put("end", endTime);
        return userMapper.countByMap(map);
    }
    /**
     * 根据时间区间统计指定状态的订单数量
     * @param beginTime
     * @param endTime
     * @param status
     * @return
     */
    private Integer getOrderCount(LocalDateTime beginTime, LocalDateTime endTime, Integer status) {
        Map map = new HashMap();
        map.put("status", status);
        map.put("begin",beginTime);
        map.put("end", endTime);
        return ordersMapper.countByMap(map);
    }
}
